SICK C 4000

Chapter 3 Operating Instructions
C 4000 Standard/Advanced
14 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8 009 861/OE59/19-11-04
Product description
3.2 Operating principle of the device
3.2.1 Components of the device
Please refer to chapter 11 “Technical specifications” on page 66 for the data sheet.
Please refer to pages 73ff. for the dimensional drawings.
3.2.2 The light curtain principle
The safety light curtain C 4000 consists of a sender and a receiver (Fig. 1). Between these
two units is the protective field, defined as the protective field height and the protective
field width.
The construction height determines the height of the protective field of the appropriate
system. For the exact protective field height, please see Tab. 30)ff. in chapter 11.4
“Dimensional drawings” on page 73.
The width of the protective field is derived from the dimension of the light path between
sender and receiver and must not exceed the maximum rated width of the protective field
(see “Technical specifications” on page 66).
Sender and receiver automatically synchronise themselves optically. An electrical connec-
tion between both components is not required.
The C 4000 is modular in construction. All optical and electronic components and assemb-
lies are housed in a slim and torsionally rigid housing.
3.2.3 Cascading
To provide effective point-of-operation protection, a maximum of three C 4000 can be
connected in series as cascade.)The device connected to the control cabinet is the main
sensor, called Host. The subsequent sensors are called Guest (cf. Fig. 1 on page 14).
Benefits of cascading
$ no additional external circuitry required
$ resolution and protective field height may differ among the individual systems
Fig. 1: Components of the
C 4000
Host without extension
connection or — in case
g
ues
t
1 connected — with
extension connection
Optional: 1. Guest system
without extension
connection or — in case
g
ues
t
2 connected — with
extension connection
Optional: 2. Guest system
with or without extension
connection